The third annual South End Earth Day starts 11 a.m. at the Elizabeth Street Park. Volunteers will visit a dozen sites for cleanup, building and planting projects in the South End as well as in the Mansion Neighborhood. Work projects are from 11:30 a.m. to 2:30 p.m., followed by food, games and entertainment at the park. For details contact organizers Willie White — at 859-4305 or avillage5@aol.com — or Shanna Goldman at 253-7121 or sgoldman78@gmail.com.